Question

(a) Define geotropism. Give one example of geotropism.
(b) What is meant by 'positive geotropism' and 'negative geotropism? Give one example of each type. Draw a labelled diagram to illustrate your answer indicating the plant part which shows positive geotropism and the plant part which shows negative geotropism.
(c) Name one plant part which exhibits positive thigmotropism.

Answer 1

Answer:

A.

plant growth movement on influence of gravity

C.

mimosa pudica

Answer 2

Answer:

(a) the response of plants to gravity is called geotropism.

b) the roots of plants always grow downwards in response to gravity.this makes sure that they will find soil and water is called positive tropism.

• the stem of plant always grow up away from the pull of gravity. this makes sure that they will get light is called negative tropism.